I want to use a valve guitar combos internal 16 ohms speaker and a separate 16 ohms cab at the same time.

Please confirm if it is safe and ok to connect a valve guitar amp
to 2 X 16 ohms speakers
using a "Y" splitter speaker cable..

Should it be plugged into the single 8 Ohms speaker output ?

or the single 16 ohms speaker output ?

cheers...


I probably already know the correct answer if this means they'd be run in parallel,
but always have niggling anxiety
and doubting confidence about electric techie practicalities...